Unified approach to the SU(2) Principal Chiral Field model at Finite Volume
作者： Joao Caetano
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摘要: Typically, the exact ground state energy of integrable models at finite volume can be computed using two main methods: thermodynamic Bethe ansatz approach and lattice discretization technique. For quantum sigma (with non-ultra local Poisson structures) bridge between these approaches has only been done through numerical methods. We briefly review techniques on example SU(2) principal chiral field model derive a single integral equation based Faddeev-Reshetikhin model. show that this is equivalent to Gromov, Kazakov Vieira derived from TBA approach.
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